<template>
  <div class="login">
    <div class="bg-img">
      <img class="name-img" src="../assets/login/name.png" />
      <img class="title-img" src="../assets/login/title.png" />
      <img class="icon-img" src="../assets/login/icon.png" />
    </div>
    <el-form ref="loginRef" :model="loginForm" :rules="loginRules" class="login-form">
      <div style="display: flex; align-items: center; justify-content: space-between;">
        <h3 class="title">用户登录</h3>
        <div style="font-size: 14px;color: #666666;">还没有账号?
          <el-button type="primary" link @click="handleGotoRegister">立即注册></el-button>
        </div>
      </div>

      <el-form-item prop="username">
        <el-input v-model="loginForm.username" type="text" size="large" autocomplete="new-password"
          placeholder="请输入手机号">
          <template #prefix><svg-icon icon-class="user" class="el-input__icon input-icon" /></template>
        </el-input>
      </el-form-item>
      <el-form-item prop="password">
        <el-input v-model="loginForm.password" type="password" size="large" autocomplete="new-password" placeholder="密码"
          @keyup.enter="handleLogin">
          <template #prefix><svg-icon icon-class="password" class="el-input__icon input-icon" /></template>
        </el-input>
      </el-form-item>
      <el-form-item prop="code" v-if="captchaEnabled">
        <el-input v-model="loginForm.code" size="large" auto-complete="off" placeholder="验证码" style="width: 63%"
          @keyup.enter="handleLogin">
          <template #prefix><svg-icon icon-class="validCode" class="el-input__icon input-icon" /></template>
        </el-input>
        <div class="login-code">
          <img :src="codeUrl" @click="getCode" class="login-code-img" />
        </div>
      </el-form-item>
      <div style="display: flex; align-items: center; justify-content: space-between;">
        <el-checkbox v-model="loginForm.rememberMe" style="margin:0px 0px 25px 0px;">记住密码</el-checkbox>
        <el-button style="margin-bottom: 25px;" type="primary" link @click="handleForgetPassword">忘记密码</el-button>
      </div>
      <el-form-item style="width:100%;">
        <el-button :loading="loading" size="large" type="primary" style="width:100%;" @click.prevent="handleLogin">
          <span v-if="!loading">登 录</span>
          <span v-else>登 录 中...</span>
        </el-button>
        <div style="float: right;" v-if="register">
          <router-link class="link-type" :to="'/register'">立即注册</router-link>
        </div>
      </el-form-item>
    </el-form>
  </div>
</template>

<script setup>
import { getCodeImg } from "@/api/login";
import Cookies from "js-cookie";
import { encrypt, decrypt } from "@/utils/jsencrypt";
import useUserStore from '@/store/modules/user'

const userStore = useUserStore()
const router = useRouter();
const { proxy } = getCurrentInstance();

const loginForm = ref({
  username: "",
  password: "",
  rememberMe: false,
  code: "",
  uuid: ""
});

const loginRules = {
  username: [{ required: true, trigger: "blur", message: "请输入您的账号" }],
  password: [{ required: true, trigger: "blur", message: "请输入您的密码" }],
  code: [{ required: true, trigger: "change", message: "请输入验证码" }]
};

const codeUrl = ref("");
const loading = ref(false);
// 验证码开关
const captchaEnabled = ref(true);
// 注册开关
const register = ref(false);
const redirect = ref(undefined);
// handle
const handleGotoRegister = () => {
  router.push({ path: '/register' })
}

const handleForgetPassword = () => {
  router.push({ path: '/forgetPassword' })
}
function handleLogin() {
  proxy.$refs.loginRef.validate(valid => {
    if (valid) {
      loading.value = true;
      // 勾选了需要记住密码设置在 cookie 中设置记住用户名和密码
      if (loginForm.value.rememberMe) {
        Cookies.set("username", loginForm.value.username, { expires: 30 });
        Cookies.set("password", encrypt(loginForm.value.password), { expires: 30 });
        Cookies.set("rememberMe", loginForm.value.rememberMe, { expires: 30 });
      } else {
        // 否则移除
        Cookies.remove("username");
        Cookies.remove("password");
        Cookies.remove("rememberMe");
      }
      // 调用action的登录方法
      userStore.login(loginForm.value).then(() => {
        router.push({ path: redirect.value || "/" });
      }).catch(() => {
        loading.value = false;
        // 重新获取验证码
        if (captchaEnabled.value) {
          getCode();
        }
      });
    }
  });
}

function getCode() {
  getCodeImg().then(res => {
    captchaEnabled.value = res.captchaEnabled === undefined ? true : res.captchaEnabled;
    if (captchaEnabled.value) {
      codeUrl.value = "data:image/gif;base64," + res.img;
      loginForm.value.uuid = res.uuid;
    }
  });
}

function getCookie() {
  const username = Cookies.get("username");
  const password = Cookies.get("password");
  const rememberMe = Cookies.get("rememberMe");
  loginForm.value = {
    username: username === undefined ? loginForm.value.username : username,
    password: password === undefined ? loginForm.value.password : decrypt(password),
    rememberMe: rememberMe === undefined ? false : Boolean(rememberMe)
  };
}

getCode();
getCookie();
</script>

<style lang='scss' scoped>
.login {
  position: relative;
  height: 100%;
  background-image: url("../assets/login/bg.png");
  background-size: cover;
}

.bg-img {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
}

.name-img {
  width: 351px;
  height: 77px;
  margin-top: 42px;
  margin-left: 54px;
}

.title-img {
  width: 358px;
  height: 70px;
  margin-top: 76px;
  margin-left: 367px;
}

.icon-img {
  width: 796px;
  height: 520px;
  margin-top: 37px;
  margin-left: 168px;
}

.login-form {
  position: absolute;
  right: vw(200);
  top: 50%;
  transform: translate(0, -50%);
  z-index: 1;
  border-radius: 6px;
  background: #ffffff;
  width: 400px;
  padding: 25px 25px 5px 25px;

  .el-input {
    height: 40px;

    input {
      height: 40px;
    }
  }

  .input-icon {
    height: 39px;
    width: 14px;
    margin-left: 0px;
  }
}

.title {
  font-size: 25px;
  font-weight: bold;
  color: #000000;
}

.login-tip {
  font-size: 13px;
  text-align: center;
  color: #bfbfbf;
}

.login-code {
  width: 33%;
  height: 40px;
  float: right;

  img {
    cursor: pointer;
    vertical-align: middle;
  }
}

.login-code-img {
  height: 40px;
  padding-left: 12px;
}
</style>
